You're examining some of the tiny printing on one of the newer twenty-dollar bills. A 1.5 mm tall letter appears 3 mm tall and upright when viewed through a converging lens. If the lens is held 4 cm from the bill, what is the focal length of the lens?
magnification
m = h'/h = 3/1.5 = 2
v/u = 2
v = 2 u
v = 2* 4 = 8 cm
now using lens formula
1/f = 1/v - 1/u
1/f = - 1/8 + 1/4
f = 8 cm
=====
Comment before rate in case any doubt, will reply for sure.. goodluck
You're examining some of the tiny printing on one of the newer twenty-dollar bills. A 1.5...
You are examining a recent acquisition for your stamp collection through a hand-held reading glass (a converging lens). Determine the focal length of the lens, if when the reading glass is 2.81 cm from the stamp the image of the stamp appears to be six times the size of the actual stamp. cm PP !! coin will be a stamp
You are examining a recent acquisition for your stamp collection through a hand-held reading glass (a converging lens). Determine the focal length of the lens, if when the reading glass is 2.77 cm from the stamp the image of the stamp appears to be three times the size of the actual stamp. cm PP :: coin will be a stamp
You are examining a recent acquisition for your stamp collection through a hand-held reading glass (a converging lens). Determine the focal length of the lens, if when the reading glass is 2.75 cm from the stamp the image of the stamp appears to be four times the size of the actual stamp. 22 x cm PP 11 coin will be a stamp
Please show all steps! Thank you
You are examining a recent acquisition for your stamp collection through a hand-held reading glass (a converging lens). Determine the focal length of the lens, if when the reading glass is 2.87 cm from the stamp the image of the stamp appears to be four times the size of the actual stamp. X cm 2.3 PP :: coin will be a stamp
Problem 25.25 - Enhanced - with Solution 19 of 21 A Review Constants Submit Previous Answers A thin lens with a focal length of 6.15 cm is used as a simple magnifier. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of A simple magnifier. Correct Set Up: When the object is at the focal point the image is at infinity and M= 25.0 cm Solve: M 25.0 cm 6.15cm 4.07x Part B When...
just letter suffice . all 4 qs
photon with a frequency of 2.5 x 1015 Hz strikes the surface of a metal. If the can be stopped by a voltage of 3.0 v, the work function of the metal is 41) An Ultraviolet electrons that are ejected be a. 5.3 eV and the photon has an energy o b. 8.2 eV and the photon has an energy of 1.3 x 10s Joules c. 5.3 eV and the photon has an...
Physics I52 Due: Wednesday, April 24, 2019 Roster No.: Score: Paper Homework #10 For multiple-choice questions, circle the letter of the one best answer (unless more than one answer is asked for). Show your work on free-response questions. Be sure to use proper units and significant figures in your final answers. Organization and neatness count, too. Do NOT use red ink- please reserve that color for grading. 1. You do NOT need to show your work for this question. Be...
CASE 20 Enron: Not Accounting for the Future* INTRODUCTION Once upon a time, there was a gleaming office tower in Houston, Texas. In front of that gleaming tower was a giant "E" slowly revolving, flashing in the hot Texas sun. But in 2001, the Enron Corporation, which once ranked among the top Fortune 500 companies, would collapse under a mountain of debt that had been concealed through a complex scheme of off-balance-sheet partnerships. Forced to declare bankruptcy, the energy firm...